Inequalities are used to represent unequal expressions.
The solution set to
is: 
The inequality is given as:

From the inequality above, we have the following observation.
- The value of variable x starts from 7/16 (inclusive)
- The value of variable x has no end (i.e. infinity)
Because, 7/16 is inclusive of the values of x, we make use of the open square bracket i.e. [
We treat
, as an exclusive value. So, we make use of the close parenthesis i.e. )
Hence, the solution set is: 
Read more about inequalities at:
brainly.com/question/20382422
Using the together rate, it is found that they would have finished the task in 8 days working together.
<h3>What is the together rate?</h3>
It is the sum of each separate rate.
In this problem, the rates are given as follows:
- Greg works four times as slower as Reid, that is, one security audit takes 40 days, hence his rate is of 1/40.
Then, the together rate is given by:


5x = 40
x = 8
They would have finished the task in 8 days working together.
More can be learned about the together rate at brainly.com/question/25159431
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Answer:
B - 8.4 m/ is the correct answer.
Explanation: